Tin opener



Nov. 23 1926.

A. ZIECHA ET AL TIN OPENER Filed Feb. 28, 1924 Jz'g I0 9 I? 1 r -fi 1- I V Laval 113.1

Awa

fatented Nov 23, 19216:

UNITED STATES PATENT OFFICE...

TIN OPENER.

Application filed February 28, 1924, Serial No. 695,837, and in Austria March 2, 1923.

This invention relates to the well known tin openers consisting of a folded sheet metal strip which is straddled about or mounted jockey-fashion on the upper edge of the tin. The opening is effected by depressing the handle, whereby the sheet metal strip turns on its fulcrum and lifts the edge of the lid by means of a beaded portion which engages under the said edge.

The invention has for its object an improvement in the tinopener and it consists in that the point- (situated farthest from the handle) of the beaded portion, lies, in the iosition of rest, a nroximatel in the ver-- 1 tical below the point (situated nearest to the handle) of the fulcrum edge on the edge of the tin, so that the leverage of the resistance to the opening operation is reduced to a minimum.

A constructional form of this invention is illustrated by way of example in the accompanying drawings in which Figure 1 illustrates the shape of the unfolded sheet metal strip.

Figure 2 is a perspective view of the tin opener, and

Figure 3 is an elevation of the tin and lid with the tin opener in position of engagement.

The tin opener consists of a strip stamped from sheet metal, bent twice at an obtuse angle (Fig. 1) whereby three parts 1, 2, 3 are formed. The strip is folded along the dotted line 4t extending at right angles to the longitudinal edges of the part 1 (Fig.2), so that the longitudinal edges of the part enclose with the line 4 an angle other than 90. :1 lug 5, provided on the part 3, is bent at right angles along the dotted line 6 and constitutes the handle of the tin opener.

On the art of the sheet metal strip, carrying the handle, there is provided a waved beaded portion parallel to the fulcrum edge, in such a manner that when the lid has been placed on the tin, the said beaded portion will engage under the edge of the lid. The arrangement is such that the right hand end point of the beaded portion comes to lie approximately in the line drawn through the left hand end point of the fulcrum edge at right angles to the latter edge.

After the tin 7' has been filled, the tin opener is placed with the fold upon the upper edge 8 of the tin so that the hoolclike part 1 comes against the inside of the wall of the tin. vVhen the lid 9 has been placed upon the tin, the lid rests with its under edge on the seam of the wall of the tin, and on the cranked portion of the tin opener which surrounds it.

When pressure is exerted upon the handle 5 in the direction towards the bottom of the tin, the tin opener is turned on the fulcrum 10, whereby the lid is carried along and lifted directly by the end point 11 of the beaded portion.

The-leverage produced by posed at the beginning of the opening operation by any leverage at all of the resistance acting at the point 11 to the opening operations, because its direction passes through the fulcrum point 10.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim is An opener for boxes including a bottom part, the wall of which is provided near the upper edge with a beaded portion and a flanged cover part, said opener being formed from a single folded strip of sheet metal including a hooked portion arranged in straddled engagement with the upper edge of the wall of the bottom part of the box, an inclined portion projecting therefrom, a beaded portion continuing clownwardly from the inclined portion and adapted to engage the beaded portion on the wall of the bottom part of the box, and a handle portion offset from the beaded portion sub stantially opposite the inclined portion, sub stantially as and for the purposes set forth.

In testimony whereof we aflix our signatures hand is not op- ALOIS ZEOHA. FRANZ ZEGHA. 

